ACT Fire & Rescue are currently investigating smoke in a basement at Lovatt Tower, Keltie Street, Phillip.
Up to 600 people have been evacuated from the 22 level office high rise building as a precaution whilst crews investigate the source of the smoke.
No sign of fire at this stage.
Two fire pumpers on scene with the Breathing Apparatus Support Vehicle, the Bronto Skylift Hydraulic Platform, the Hazardous Materials Unit and a Command vehicle.
Update to follow.